package com.example.experiment4;

import android.app.Service;
import android.content.Intent;
import android.os.Binder;
import android.os.IBinder;

public class BindService extends Service {
    private int count;
    private boolean quit;
    // 定义onBinder方法所返回的对象
    private MyBinder binder = new MyBinder();
    // 通过继承Binder来实现IBinder类
    public class MyBinder extends Binder {
        public int getCount(){
            // 获取Service的运行状态：count
            return count;
        }
    }


    // Service被创建时回调该方法。
    @Override
    public void onCreate() {
        super.onCreate();
        System.out.println("Service创建");
        // 启动一条线程、动态地修改count状态值
        new Thread() {
            @Override
            public void run() {
                while (!quit) {
                    try {
                        Thread.sleep(1000);
                    } catch (InterruptedException e) {
                    }
                    count++;
                }
            }
        }.start();
    }

    // 必须实现的onBind()方法
    @Override
    public IBinder onBind(Intent intent) {
        System.out.println("Service绑定");
        return binder;
    }

    // Service被断开连接时回调该方法
    @Override
    public boolean onUnbind(Intent intent) {
        System.out.println("Service断开");
        return true;
    }

    // Service被关闭之前回调。
    @Override
    public void onDestroy() {
        super.onDestroy();
        System.out.println("Service关闭");
        quit=true;
    }
}
